Intelligent electronic type voltage transformer

Abstract

The invention discloses an intelligent electronic type voltage transformer. The intelligent electronic type voltage transformer comprises a far-end module, an amorphous iron core, an optical fiber composite insulator, an insulating oil layer, a resistance-capacitance voltage divider, an optical fiber and a combination unit. According to the intelligent electronic type voltage transformer, the iron core is made of amorphous materials, a resistance-capacitance voltage division principle is used as a design principle, and a transformer body is formed by pouring insulting silicone rubber on the amorphous iron core, a primary winding and a secondary winding. According to the intelligent electronic type voltage transformer, the iron core is made of amorphous alloy, so that the intelligent electronic type voltage transformer has high saturated magnetic induction and low loss, the weight and the size of the intelligent electronic type voltage transformer can be reduced greatly, and efficiency can be improved greatly. In addition, the intelligent electronic type voltage transformer has low noise, is easy and convenient to install and use, does not need maintaining in an operation process, is light in weight, high in accuracy, good in linearity and wide in measuring range, overcomes the defects that a conventional electromagnetic voltage transformer is narrow in frequency band, slow in response and the like, and has practical significance to transformation of and improvement to existing electrical equipment, and the ability to resist electromagnetic interference is enhanced.

Description

technical field [0001] The invention belongs to the technical field of digital intelligent substation automation, and in particular relates to an intelligent electronic voltage transformer. Background technique [0002] The voltage transformer is a device that connects the primary side between the bus bar and the ground of the high-voltage power grid, and the secondary side is connected to the power meter, the watt-hour meter, and the electromechanical protection equipment to provide bus voltage signals for the electromechanical protection equipment and electric energy metering. Due to the high-voltage power grid The voltage is very high, and the insulation requirements of the voltage transformer are also very high; and the measurement accuracy is also very high (generally requires 0.2 level, 3P), the traditional voltage transformer based on the theory of electromagnetic induction, its principle is the transformer principle , its structure is like a small-capacity transforme...

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Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide an intelligent electronic voltage transformer, which aims to solve the problem of traditional transformers with large volume, heavy weight, high cost, and difficult to make high insulation performance, and the analog output cannot The problem of meeting the requirements of digital substation

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